Justin King may refer to:

• Justin King (businessman) (born 1961), former CEO of J Sainsbury plc
• Justin King (guitarist) (born 1980), American musician and artist
• Justin King (American football) (born 1987), American football cornerback
• Justin King (businessman/entrepreneur) (born 1974), founder and CEO of Rooks Barbershops, founder of Luchador, founder and owner of Double Dagger Pomade, founder and co-owner of Rosewater Tattoo, founder of Veggielicious

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